Pipe connection



May 26, 1925.

Filed April 23 Patented May 26, 1925.

PATENT OFFICE.

WILLIAM H. DARNELL, OF CLAYTON, MICHIGAN.

PIPE CONNECTION.

Application filed April 23, 1924.

To all whom it may concern. I

Be it known that I, VVILLIABI H. DARNELL, a citizen of the UnitedStates, residing at Clayton, in the county of Lenawee and State ofMichigan, have invented new and useful Improvements in Pipe Connections,of which the following is a specification.

This invention has reference generally to improvements in pipe couplingsand more particularly relates to an improved stove pipe connection.

The invention has for its primary aim and object to provide a device ofthe above mentioned character wherein a pair of sections are employedfor detachable engagement with each other, one of the sections servingto lock the other section in engagement with the stove pipe thimblewhile acting in conjunction with the inner engaged ends of the sectionsis an improved clamping and retaining band for clamping the sectionsagainst movement relative to each other and relative to the thimble andchimney in which the thimble is mounted.

It is a more specific object of the present invention to provide adevice of the above mentioned character wherein the clamping band is ofnovel construction while associated with the meeting ends thereof is animproved clamping fastener for retaining the band in clamping relationrelative to the other or adjacent parts while the body of the band is soshaped as to be adjustably engaged on the engaged ends of the sectionsso as to insure of an effective mounting of all of the parts in positionregardless of the thickness of the chimney in which the thimble ismounted.

Among the other aims and objects of this invention may be recited theprovision of a device of the character described with a view tocompactness, and in which the number of parts are few, the constructionsimple, the cost of production low and the efficiency high.

Other improvements and novel details in the construction and arrangementof the various parts of the apparatus will be brought out more in detailin the description to follow, which for a clear understanding of theinvention should be considered in connection with the accompanyingdrawings forming a parthereof, and wherein is disclosed for the purposeof illustration a convenient and satisfactory embodiment of theinvention. It is to be noted in this connection that minor Serial No.708,599.

Similar characters of reference are em- I ployed in all of the abovedescribed views, to indicate corresponding parts.

Referring now, more particularly, to the accompanymg drawings, there isillustrated a chimney 1 having an opening 2 therein in which is mounteda thimble 3.

Disposed through the thimble 3 is an open sleeve 4 one end of which isformed at opposite points with outwardly extending lips 5 designed forengagement with one .end edge of the thimble while the opposite portionis corrugated to provide substantial threads 6 and this corrugated orthreaded portion is positioned exteriorly of the sleeve and the chimney.Engaged within the corrugated or threaded portion 6 is a correspondinglycorrugated and threaded portion 7 of stove pipe 8 the latter beingslightly tapered at its corrugated portion so that when the said pipe 8is engaged in the manner described the open sleeve 4 will be spread andmaintained in frictional engagement with the thimble 3.

In order to insure the retention of the sleeve at in engagement with thethimble and to insure of the maintenance of the sleeve and pipe inengagement with each other so that they cannot move relative to eachother or to the chimney 1, improved clamping means is employed in thepresent instance consisting of an open band 9 corrugated as at 10correspondingly to the corrugations 6 and 7, said band being telescop-edabout the pipe 8 and slid thereon so as to be arranged inengagement'with the corrugated portions 6 and 7 of the sleeve and piperespectively, subsequent, of course, to the proper engagement of thethreaded or corrugated portions 6 and 7 relative to each other. The bandis formed with an annular and out wardl extending flange 11 which isarrang against the adjacent face of the 1 metal being folded upon itselfto provide a nated sleeve or ear l3 inwhich is swingably engaged one endof the loop 14 while the free portions are secured to the outer surfacenear one meeting end of the band through the instrumentality of suitablefasteners 15. Another attaching member generally designated 16 isprovided being formed from a single piece of metal which is first cutout to form a rectangular opening 17 and subsequently folded upon itselfto provide spaced sleeves 18 while the free portions are secured bysuitable fasteners 19 to the outer surface of the band 9 near the othermeeting edge thereof. A hook generally desigy the numeral 20 is employedbeing formed from a single piece of wire the terminals of whichconstitute trunnions 21- which are swingably-engaged in the spacedsleeves 18, By this construction subsequent to the arranging of the pipeand sleeve in the properly adjusted position and the proper securing ofthe band about the pipe and sleeve, the hook isengaged within the loopand is subsequently swung rearwardly and swung downwardly into a lockedengagement, thus drawing the band into frictional engagement with thepipe and sleeve to prevent accidental movement of the pipe and sleevewith respect to each other and to the chimney.

What is claimed is:

In a device of the character described the combination with a chimneywall. having an opening and a thimhle mounted through the opening, of anopen sleeve telescoped within the thimble, lips projecting outwardlyfrom one end of the sleeve and engaged with the adjacentedge of thethimble, the opposite portion of the sleeverbeing extended andcorrugated, a pipe section having one end portion corrugated andtelescopieally and adjustably engaged within the corrugated portion ofthe sleeve for slightly spreading the firstsection into; bindingengagement with the thimble, an open, corrugated band adjustably engagedabout the corrugated portions of the said sections, a chimney engagingflange projecting from one edge of the band for cooperating with thelips, on the o posite ends of the sleeve, and means for re easablyclamping the band from clamping engagement with the said sleeve and pipesection.

In testimony whereof I atfix my signature. 7

WILLIAM H. DARNELL

